1) Scope & mandatory inputs

This procedure applies to PEB steel structures including: foundations/anchor bolts, primary frames (columns – rafters), bracing systems, purlins, roof/wall sheeting, and accessories (gutters, downpipes, trims, ridge caps, doors, etc.).

Minimum inputs to build “to standard”:

• Approved construction drawings (shop drawings): general arrangement, grids, foundation layout, connection details, bolt schedule.
• Method statement & lifting plan, temporary bracing plan, site safety zoning/traffic control.
• Material/member documentation: member IDs, certificates (CO/CQ if required), bolt grades, paint system, sheeting specs.
• Certified/checked lifting gears: cranes, slings, shackles, turnbuckles, etc. inspected before each shift.

2) Site preparation: grids – levels – laydown – safety

2.1 Verify grids & levels

• Confirm benchmark coordinates and elevation; verify grid deviations against drawings.
• Mark gridlines clearly; set safe access routes, lifting exclusion zones, and member laydown areas.

2.2 Safety readiness before erection

INDUSVINA references (recommended before site execution): Pillar 1/5 — Risk identification (JSA) • Pillar 2/5 — Procedure & Permit to Work (PTW)

3) Anchor bolt verification before frame erection

Anchor bolts are the “origin point” of the frame system. Grid/level errors force field adjustments, create restraint stresses, and break erection tolerances.

• Check bolt centerlines against grids; verify bolt spacing matches base plate pattern.
• Check top-of-foundation elevation / base leveling; surface flatness and grout condition (if applicable).
• Check threads, projection length, bending; clean threads before installation.

4) Primary frame erection: columns – rafters in a stable sequence

4.1 Frame erection principles

• Erect by bay; install temporary bracing immediately to stabilize before unhooking the crane.
• Start with “reference frames” (end frames / braced bays) to establish alignment control.
• Do not release the load until columns/rafters are temporarily secured and stable.

4.2 Column erection

• Set columns in position, install nuts/washers for temporary holding; use shims as designed (if applicable).
• Install temporary guys/turnbuckles to keep columns plumb during erection.

Gallery Version 2 — Column erection & roof/wall cladding (site illustration)

Desktop: 2 columns • Mobile: 1 column

Step 4.2 • Column erection

Step 7 • Roof/wall cladding

Read more: PEB technology – standards – applications • 4 core tasks in project execution

4.3 Rafter installation & frame connections

• Install rafters using safe lifting sequence; snug-tight bolts per “right hole – right grade”.
• Complete bay 1 → lock temporary stability → move to the next bay.

5) Bracing – purlins – stability system: the “backbone” against sway

Many erection incidents are not caused by the crane, but by insufficient stability when loads are released under wind gusts or eccentric forces.

• Install roof/wall bracing (X-bracing, rod bracing) per drawings: correct locations, anchor points, and tensioning.
• Install roof/wall purlins systematically from reference frames outward; ensure adequate connections before sheeting.
• Install purlin bridging and secondary bracing to prevent twist and ensure stability during construction.

6) Geometry alignment & bolting in stages

6.1 Alignment

• Check column plumbness, rafter straightness/deflection, bay spacing, and longitudinal line.
• Adjust with turnbuckles/temporary bracing; do not force-bend members.
• Lock reference bays first, then propagate checks to the rest.

6.2 Bolting in stages

• Stage 1: snug-tight to hold geometry and continue erection.
• Stage 2: after alignment acceptance, tighten to torque/spec (use torque wrench if required).
• Apply inspection marking (paint mark) for QA/QC and handover.

7) Roof sheeting – wall cladding – leak-prevention accessories

7.1 Sheeting principles

• Start from the most stable area; ensure fall protection (lifelines, harness, anchorage, safety nets).
• Control lap direction; use correct fastener type/spacing/washer; avoid repeated re-drilling.

7.2 Leak-prevention items (often underestimated)

• Install ridge caps, fascia/trim, gutters, downpipes per details.
• Use specified sealants/tapes; treat penetrations (pipes, vents, skylights) properly.

8) Touch-up painting – corrosion protection – structural finishing

This section focuses on items that directly affect durability and structural safety:

• Touch-up damaged coating as per paint system requirements.
• Check corrosion-prone zones (column bases, water-trap areas, gutter interfaces).
• Finish base plates/covers, protective guards, and safety signage for hazardous zones.

Note: civil works (paving, road markings, landscaping) may be part of the project scope, but are not the core of the PEB frame erection procedure.

9) QA/QC & inspection: bay-by-bay and by discipline

Effective inspection is not “inspect only at the end” — it is staged acceptance to lock quality:

• Acceptance of anchor bolts / base plates.
• Acceptance of frames by bay (columns – rafters – bracing – purlins).
• Acceptance of bolting, geometry, and stability bracing.
• Acceptance of roof/wall cladding and leak-prevention works.

10) Standards & applicability (Vietnam + international) — mapped to controls

Standards vary by project requirements. Below is a practical grouping and how they align with key control points.

11) Daily checklist for PM/Site Manager

• Before shift: wind/weather check; lifting gear inspection; PTW/JSA; define exclusion zones.
• During shift: erect bay-by-bay; brace before unhooking; no “erect then fix”.
• End of shift: lock temporary stability; mark tightened bolts; photo records; update logs & checklists.

For standardized safety control: JSA + PTW is the recommended “dual gate” to implement first.

12) Conclusion (Chief Engineer)

A standard procedure does not slow down progress — it reduces rework, prevents incidents, reduces acceptance disputes, and protects the contractor’s reputation. For PEB, “to standard” means getting it right from foundations/anchors to bolting – leak prevention – inspection records.